weak_map 1.0.1

WeakMap is a map of key/value pairs in which the keys are weakly referenced. WeakContainer is a weak-reference that only lets you check if some object it the same you had before.

example/main.dart

import 'package:weak_map/weak_map.dart';

void main() {
  var map = WeakMap();
  map["A"] = 1;
  print('A = ${map["A"]}'); // A = 1
  print('B = ${map["B"]}'); // B = null

  var value = WeakContainer("X");
  print('Contains X = ${value.contains("X")}'); // Contains X = true
  print('Contains Y = ${value.contains("Y")}'); // Contains Y = false
}